central.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2003 Jake Burkholder.
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD$");
   31 
   32 #include <sys/param.h>
   33 #include <sys/systm.h>
   34 #include <sys/bus.h>
   35 #include <sys/kernel.h>
   36 #include <sys/malloc.h>
   37 #include <sys/module.h>
   38 
   39 #include <dev/ofw/ofw_bus.h>
   40 #include <dev/ofw/ofw_bus_subr.h>
   41 #include <dev/ofw/openfirm.h>
   42 
   43 #include <machine/bus.h>
   44 #include <machine/resource.h>
   45 
   46 #include <sys/rman.h>
   47 
   48 #include <sparc64/sbus/ofw_sbus.h>
   49 
   50 struct central_devinfo {
   51         struct ofw_bus_devinfo  cdi_obdinfo;
   52         struct resource_list    cdi_rl;
   53 };
   54 
   55 struct central_softc {
   56         int                     sc_nrange;
   57         struct sbus_ranges      *sc_ranges;
   58 };
   59 
   60 static device_probe_t central_probe;
   61 static device_attach_t central_attach;
   62 static bus_print_child_t central_print_child;
   63 static bus_probe_nomatch_t central_probe_nomatch;
   64 static bus_alloc_resource_t central_alloc_resource;
   65 static bus_adjust_resource_t central_adjust_resource;
   66 static bus_get_resource_list_t central_get_resource_list;
   67 static ofw_bus_get_devinfo_t central_get_devinfo;
   68 
   69 static int central_print_res(struct central_devinfo *);
   70 
   71 static device_method_t central_methods[] = {
   72         /* Device interface */
   73         DEVMETHOD(device_probe,         central_probe),
   74         DEVMETHOD(device_attach,        central_attach),
   75         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
   76         DEVMETHOD(device_suspend,       bus_generic_suspend),
   77         DEVMETHOD(device_resume,        bus_generic_resume),
   78 
   79         /* Bus interface */
   80         DEVMETHOD(bus_print_child,      central_print_child),
   81         DEVMETHOD(bus_probe_nomatch,    central_probe_nomatch),
   82         DEVMETHOD(bus_alloc_resource,   central_alloc_resource),
   83         DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
   84         DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
   85         DEVMETHOD(bus_adjust_resource,  central_adjust_resource),
   86         DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
   87         DEVMETHOD(bus_setup_intr,       bus_generic_setup_intr),
   88         DEVMETHOD(bus_teardown_intr,    bus_generic_teardown_intr),
   89         DEVMETHOD(bus_get_resource,     bus_generic_rl_get_resource),
   90         DEVMETHOD(bus_get_resource_list, central_get_resource_list),
   91         DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str),
   92 
   93         /* ofw_bus interface */
   94         DEVMETHOD(ofw_bus_get_devinfo,  central_get_devinfo),
   95         DEVMETHOD(ofw_bus_get_compat,   ofw_bus_gen_get_compat),
   96         DEVMETHOD(ofw_bus_get_model,    ofw_bus_gen_get_model),
   97         DEVMETHOD(ofw_bus_get_name,     ofw_bus_gen_get_name),
   98         DEVMETHOD(ofw_bus_get_node,     ofw_bus_gen_get_node),
   99         DEVMETHOD(ofw_bus_get_type,     ofw_bus_gen_get_type),
  100 
  101         DEVMETHOD_END
  102 };
  103 
  104 static driver_t central_driver = {
  105         "central",
  106         central_methods,
  107         sizeof(struct central_softc),
  108 };
  109 
  110 static devclass_t central_devclass;
  111 
  112 EARLY_DRIVER_MODULE(central, nexus, central_driver, central_devclass, 0, 0,
  113     BUS_PASS_BUS);
  114 MODULE_DEPEND(fhc, nexus, 1, 1, 1);
  115 MODULE_VERSION(central, 1);
  116 
  117 static int
  118 central_probe(device_t dev)
  119 {
  120 
  121         if (strcmp(ofw_bus_get_name(dev), "central") == 0) {
  122                 device_set_desc(dev, "central");
  123                 return (0);
  124         }
  125         return (ENXIO);
  126 }
  127 
  128 static int
  129 central_attach(device_t dev)
  130 {
  131         struct central_devinfo *cdi;
  132         struct sbus_regs *reg;
  133         struct central_softc *sc;
  134         phandle_t child;
  135         phandle_t node;
  136         device_t cdev;
  137         int nreg;
  138         int i;
  139 
  140         sc = device_get_softc(dev);
  141         node = ofw_bus_get_node(dev);
  142 
  143         sc->sc_nrange = OF_getprop_alloc_multi(node, "ranges",
  144             sizeof(*sc->sc_ranges), (void **)&sc->sc_ranges);
  145         if (sc->sc_nrange == -1) {
  146                 device_printf(dev, "can't get ranges\n");
  147                 return (ENXIO);
  148         }
  149 
  150         for (child = OF_child(node); child != 0; child = OF_peer(child)) {
  151                 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO);
  152                 if (ofw_bus_gen_setup_devinfo(&cdi->cdi_obdinfo, child) != 0) {
  153                         free(cdi, M_DEVBUF);
  154                         continue;
  155                 }
  156                 nreg = OF_getprop_alloc_multi(child, "reg", sizeof(*reg),
  157                     (void **)&reg);
  158                 if (nreg == -1) {
  159                         device_printf(dev, "<%s>: incomplete\n",
  160                             cdi->cdi_obdinfo.obd_name);
  161                         ofw_bus_gen_destroy_devinfo(&cdi->cdi_obdinfo);
  162                         free(cdi, M_DEVBUF);
  163                         continue;
  164                 }
  165                 resource_list_init(&cdi->cdi_rl);
  166                 for (i = 0; i < nreg; i++)
  167                         resource_list_add(&cdi->cdi_rl, SYS_RES_MEMORY, i,
  168                             reg[i].sbr_offset, reg[i].sbr_offset +
  169                             reg[i].sbr_size, reg[i].sbr_size);
  170                 OF_prop_free(reg);
  171                 cdev = device_add_child(dev, NULL, -1);
  172                 if (cdev == NULL) {
  173                         device_printf(dev, "<%s>: device_add_child failed\n",
  174                             cdi->cdi_obdinfo.obd_name);
  175                         resource_list_free(&cdi->cdi_rl);
  176                         ofw_bus_gen_destroy_devinfo(&cdi->cdi_obdinfo);
  177                         free(cdi, M_DEVBUF);
  178                         continue;
  179                 }
  180                 device_set_ivars(cdev, cdi);
  181         }
  182 
  183         return (bus_generic_attach(dev));
  184 }
  185 
  186 static int
  187 central_adjust_resource(device_t bus __unused, device_t child __unused,
  188     int type __unused, struct resource *r __unused, rman_res_t start __unused,
  189     rman_res_t end __unused)
  190 {
  191 
  192         return (ENXIO);
  193 }
  194 
  195 static int
  196 central_print_child(device_t dev, device_t child)
  197 {
  198         int rv;
  199 
  200         rv = bus_print_child_header(dev, child);
  201         rv += central_print_res(device_get_ivars(child));
  202         rv += bus_print_child_footer(dev, child);
  203         return (rv);
  204 }
  205 
  206 static void
  207 central_probe_nomatch(device_t dev, device_t child)
  208 {
  209         const char *type;
  210 
  211         device_printf(dev, "<%s>", ofw_bus_get_name(child));
  212         central_print_res(device_get_ivars(child));
  213         type = ofw_bus_get_type(child);
  214         printf(" type %s (no driver attached)\n",
  215             type != NULL ? type : "unknown");
  216 }
  217 
  218 static struct resource *
  219 central_alloc_resource(device_t bus, device_t child, int type, int *rid,
  220     rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
  221 {
  222         struct resource_list *rl;
  223         struct resource_list_entry *rle;
  224         struct central_softc *sc;
  225         struct resource *res;
  226         bus_addr_t coffset;
  227         bus_addr_t cend;
  228         bus_addr_t phys;
  229         int isdefault;
  230         int passthrough;
  231         int i;
  232 
  233         isdefault = RMAN_IS_DEFAULT_RANGE(start, end);
  234         passthrough = (device_get_parent(child) != bus);
  235         res = NULL;
  236         rle = NULL;
  237         rl = BUS_GET_RESOURCE_LIST(bus, child);
  238         sc = device_get_softc(bus);
  239         switch (type) {
  240         case SYS_RES_IRQ:
  241                 return (resource_list_alloc(rl, bus, child, type, rid, start,
  242                     end, count, flags));
  243         case SYS_RES_MEMORY:
  244                 if (!passthrough) {
  245                         rle = resource_list_find(rl, type, *rid);
  246                         if (rle == NULL)
  247                                 return (NULL);
  248                         if (rle->res != NULL)
  249                                 panic("%s: resource entry is busy", __func__);
  250                         if (isdefault) {
  251                                 start = rle->start;
  252                                 count = ulmax(count, rle->count);
  253                                 end = ulmax(rle->end, start + count - 1);
  254                         }
  255                 }
  256                 for (i = 0; i < sc->sc_nrange; i++) {
  257                         coffset = sc->sc_ranges[i].coffset;
  258                         cend = coffset + sc->sc_ranges[i].size - 1;
  259                         if (start >= coffset && end <= cend) {
  260                                 start -= coffset;
  261                                 end -= coffset;
  262                                 phys = sc->sc_ranges[i].poffset |
  263                                     ((bus_addr_t)sc->sc_ranges[i].pspace << 32);
  264                                 res = bus_generic_alloc_resource(bus, child,
  265                                     type, rid, phys + start, phys + end,
  266                                     count, flags);
  267                                 if (!passthrough)
  268                                         rle->res = res;
  269                                 break;
  270                         }
  271                 }
  272                 break;
  273         }
  274         return (res);
  275 }
  276 
  277 static struct resource_list *
  278 central_get_resource_list(device_t bus, device_t child)
  279 {
  280         struct central_devinfo *cdi;
  281 
  282         cdi = device_get_ivars(child);
  283         return (&cdi->cdi_rl);
  284 }
  285 
  286 static const struct ofw_bus_devinfo *
  287 central_get_devinfo(device_t bus, device_t child)
  288 {
  289         struct central_devinfo *cdi;
  290 
  291         cdi = device_get_ivars(child);
  292         return (&cdi->cdi_obdinfo);
  293 }
  294 
  295 static int
  296 central_print_res(struct central_devinfo *cdi)
  297 {
  298 
  299         return (resource_list_print_type(&cdi->cdi_rl, "mem", SYS_RES_MEMORY,
  300             "%#jx"));
  301 }
Cache object: 6b1f68b8f03025ee332e86c548661c86
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.
FreeBSD/Linux Kernel Cross Reference sys/sparc64/central/central.c

FreeBSD/Linux Kernel Cross Reference
sys/sparc64/central/central.c
